OS: ubuntu 16.04 mdadm version 4.1, same behaviour with mdadm-4.1-rc1 kernel: vanilla 4.20.0-rc7, same behaviour on kernels: 4.17.2-xanmod3, 4.18.4-xanmod3 After reboot mdadm cannot assemble raid5 array with write journal, md0_raid5 process hung at 100% cpu ######## top - 11:27:43 up 1:01, 1 user, load average: 2.00, 2.00, 1.99 Tasks: 245 total, 2 running, 147 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.0 us, 12.5 sy, 0.0 ni, 87.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem : 16356268 total, 14490400 free, 741160 used, 1124708 buff/cache KiB Swap: 4194300 total, 4194300 free, 0 used. 15165612 avail Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 778 root 20 0 0 0 0 R 99.7 0.0 50:31.22 md0_raid5 #### ps -ef | grep mdadm | grep -v grep root 771 1 15 10:26 ? 00:10:27 /sbin/mdadm --incremental --export /dev/md1 --offroot /dev/disk/by-id/md-name-ub-nas:1 /dev/disk/by-id/md-uuid-45435382:becadffe:aedeb5ab:11313f27 root 1841 1 0 10:29 ? 00:00:00 /sbin/mdadm --monitor --scan ### cat /proc/mdstat Personalities : [raid1] [raid6] [raid5] [raid4] md0 : active raid5 md1[6](J) sdd1[2] sdc1[1] sde1[5] sdf1[4] 5860509696 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU] md1 : active raid1 nvme0n1p4[1] 10476544 blocks super 1.2 [1/1] [U] #### mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Wed Nov 21 16:03:49 2018 Raid Level : raid5 Used Dev Size : 1953503232 (1863.01 GiB 2000.39 GB) Raid Devices : 4 Total Devices : 5 Persistence : Superblock is persistent Update Time : Wed Dec 19 10:26:30 2018 State : active, Not Started Active Devices : 4 Working Devices : 5 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 64K Consistency Policy : journal Name : ub-nas:0 (local to host ub-nas) UUID : 9094396e:3e5b1d19:54861ff8:7fd9f9f6 Events : 3522 Number Major Minor RaidDevice State 1 8 33 0 active sync /dev/sdc1 2 8 49 1 active sync /dev/sdd1 5 8 65 2 active sync /dev/sde1 4 8 81 3 active sync /dev/sdf1 6 9 1 - journal /dev/md1 ### md0 creation command: mdadm -C /dev/md0 -l5 -n4 -c64K --write-journal=/dev/md1 --bitmap=none --consistency-policy=journal /dev/sd[c-f]1 ### dmesg errors [ 649.767590] md/raid:md0: recovering 832 data-only stripes and 31102 data-parity stripes [ 861.273876] INFO: task mdadm:771 blocked for more than 120 seconds. [ 861.274319] Not tainted 4.20.0-rc7 #1 [ 861.274613] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 861.275172] mdadm D 0 771 1 0x00000004 [ 861.275173] Call Trace: [ 861.275179] ? __schedule+0x404/0x8f0 [ 861.275181] schedule+0x39/0x90 [ 861.275186] r5l_start+0x1282/0x1340 [raid456] [ 861.275189] ? wait_woken+0x80/0x80 [ 861.275191] md_start+0x3b/0x60 [ 861.275195] do_md_run+0x4b/0xb0 [ 861.275197] md_ioctl+0x19da/0x1e80 [ 861.275200] ? current_time+0x4d/0x90 [ 861.275203] ? shmem_truncate_range+0x1e/0x40 [ 861.275207] ? fsnotify_grab_connector+0x3c/0x60 [ 861.275209] ? fsnotify_destroy_marks+0x22/0x110 [ 861.275212] blkdev_ioctl+0x967/0x9f0 [ 861.275214] ? dentry_kill+0x4d/0x1a0 [ 861.275215] block_ioctl+0x39/0x40 [ 861.275218] do_vfs_ioctl+0xa1/0x620 [ 861.275222] ksys_ioctl+0x66/0x70 [ 861.275224] __x64_sys_ioctl+0x16/0x20 [ 861.275226] do_syscall_64+0x55/0x100 [ 861.275229] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 861.275231] RIP: 0033:0x7f23a49baf47 [ 861.275235] Code: Bad RIP value. [ 861.275235] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 861.275237] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 861.275237] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 861.275238] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 861.275238] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 861.275239] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 984.153444] INFO: task mdadm:771 blocked for more than 120 seconds. [ 984.153887] Not tainted 4.20.0-rc7 #1 [ 984.154180] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 984.154737] mdadm D 0 771 1 0x00000004 [ 984.154740] Call Trace: [ 984.154745] ? __schedule+0x404/0x8f0 [ 984.154747] schedule+0x39/0x90 [ 984.154753] r5l_start+0x1282/0x1340 [raid456] [ 984.154757] ? wait_woken+0x80/0x80 [ 984.154759] md_start+0x3b/0x60 [ 984.154762] do_md_run+0x4b/0xb0 [ 984.154763] md_ioctl+0x19da/0x1e80 [ 984.154766] ? current_time+0x4d/0x90 [ 984.154769] ? shmem_truncate_range+0x1e/0x40 [ 984.154772] ? fsnotify_grab_connector+0x3c/0x60 [ 984.154774] ? fsnotify_destroy_marks+0x22/0x110 [ 984.154776] blkdev_ioctl+0x967/0x9f0 [ 984.154780] ? dentry_kill+0x4d/0x1a0 [ 984.154782] block_ioctl+0x39/0x40 [ 984.154784] do_vfs_ioctl+0xa1/0x620 [ 984.154786] ksys_ioctl+0x66/0x70 [ 984.154787] __x64_sys_ioctl+0x16/0x20 [ 984.154789] do_syscall_64+0x55/0x100 [ 984.154791] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 984.154792] RIP: 0033:0x7f23a49baf47 [ 984.154795] Code: Bad RIP value. [ 984.154795] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 984.154796] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 984.154796] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 984.154797] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 984.154798] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 984.154798] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1107.033385] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1107.033827] Not tainted 4.20.0-rc7 #1 [ 1107.034121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1107.034679] mdadm D 0 771 1 0x00000004 [ 1107.034681] Call Trace: [ 1107.034686] ? __schedule+0x404/0x8f0 [ 1107.034688] schedule+0x39/0x90 [ 1107.034693] r5l_start+0x1282/0x1340 [raid456] [ 1107.034699] ? wait_woken+0x80/0x80 [ 1107.034701] md_start+0x3b/0x60 [ 1107.034703] do_md_run+0x4b/0xb0 [ 1107.034705] md_ioctl+0x19da/0x1e80 [ 1107.034708] ? current_time+0x4d/0x90 [ 1107.034711] ? shmem_truncate_range+0x1e/0x40 [ 1107.034713] ? fsnotify_grab_connector+0x3c/0x60 [ 1107.034714] ? fsnotify_destroy_marks+0x22/0x110 [ 1107.034717] blkdev_ioctl+0x967/0x9f0 [ 1107.034719] ? dentry_kill+0x4d/0x1a0 [ 1107.034720] block_ioctl+0x39/0x40 [ 1107.034722] do_vfs_ioctl+0xa1/0x620 [ 1107.034723] ksys_ioctl+0x66/0x70 [ 1107.034725] __x64_sys_ioctl+0x16/0x20 [ 1107.034727] do_syscall_64+0x55/0x100 [ 1107.034728] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1107.034730] RIP: 0033:0x7f23a49baf47 [ 1107.034732] Code: Bad RIP value. [ 1107.034732] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1107.034733] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1107.034734] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1107.034734] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1107.034735] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1107.034735] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1229.913468] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1229.913468] Not tainted 4.20.0-rc7 #1 [ 1229.913469] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1229.913469] mdadm D 0 771 1 0x00000004 [ 1229.913470] Call Trace: [ 1229.913475] ? __schedule+0x404/0x8f0 [ 1229.914767] schedule+0x39/0x90 [ 1229.914772] r5l_start+0x1282/0x1340 [raid456] [ 1229.914776] ? wait_woken+0x80/0x80 [ 1229.914777] md_start+0x3b/0x60 [ 1229.914779] do_md_run+0x4b/0xb0 [ 1229.914780] md_ioctl+0x19da/0x1e80 [ 1229.914783] ? current_time+0x4d/0x90 [ 1229.914786] ? shmem_truncate_range+0x1e/0x40 [ 1229.914789] ? fsnotify_grab_connector+0x3c/0x60 [ 1229.914790] ? fsnotify_destroy_marks+0x22/0x110 [ 1229.914793] blkdev_ioctl+0x967/0x9f0 [ 1229.914794] ? dentry_kill+0x4d/0x1a0 [ 1229.914796] block_ioctl+0x39/0x40 [ 1229.914798] do_vfs_ioctl+0xa1/0x620 [ 1229.914801] ksys_ioctl+0x66/0x70 [ 1229.914803] __x64_sys_ioctl+0x16/0x20 [ 1229.914806] do_syscall_64+0x55/0x100 [ 1229.914809] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1229.914812] RIP: 0033:0x7f23a49baf47 [ 1229.914816] Code: Bad RIP value. [ 1229.914816] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1229.914818] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1229.914819] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1229.914819] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1229.914820] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1229.914821] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1352.793311] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1352.793753] Not tainted 4.20.0-rc7 #1 [ 1352.794047] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1352.794602] mdadm D 0 771 1 0x00000004 [ 1352.794605] Call Trace: [ 1352.794611] ? __schedule+0x404/0x8f0 [ 1352.794612] schedule+0x39/0x90 [ 1352.794617] r5l_start+0x1282/0x1340 [raid456] [ 1352.794621] ? wait_woken+0x80/0x80 [ 1352.794624] md_start+0x3b/0x60 [ 1352.794626] do_md_run+0x4b/0xb0 [ 1352.794628] md_ioctl+0x19da/0x1e80 [ 1352.794632] ? current_time+0x4d/0x90 [ 1352.794634] ? shmem_truncate_range+0x1e/0x40 [ 1352.794637] ? fsnotify_grab_connector+0x3c/0x60 [ 1352.794639] ? fsnotify_destroy_marks+0x22/0x110 [ 1352.794641] blkdev_ioctl+0x967/0x9f0 [ 1352.794644] ? dentry_kill+0x4d/0x1a0 [ 1352.794646] block_ioctl+0x39/0x40 [ 1352.794649] do_vfs_ioctl+0xa1/0x620 [ 1352.794651] ksys_ioctl+0x66/0x70 [ 1352.794653] __x64_sys_ioctl+0x16/0x20 [ 1352.794655] do_syscall_64+0x55/0x100 [ 1352.794657] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1352.794658] RIP: 0033:0x7f23a49baf47 [ 1352.794660] Code: Bad RIP value. [ 1352.794661] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1352.794661] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1352.794662] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1352.794663] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1352.794663] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1352.794663] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1475.673012] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1475.673454] Not tainted 4.20.0-rc7 #1 [ 1475.673748] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1475.674303] mdadm D 0 771 1 0x00000004 [ 1475.674306] Call Trace: [ 1475.674311] ? __schedule+0x404/0x8f0 [ 1475.674313] schedule+0x39/0x90 [ 1475.674317] r5l_start+0x1282/0x1340 [raid456] [ 1475.674321] ? wait_woken+0x80/0x80 [ 1475.674324] md_start+0x3b/0x60 [ 1475.674327] do_md_run+0x4b/0xb0 [ 1475.674329] md_ioctl+0x19da/0x1e80 [ 1475.674331] ? current_time+0x4d/0x90 [ 1475.674335] ? shmem_truncate_range+0x1e/0x40 [ 1475.674337] ? fsnotify_grab_connector+0x3c/0x60 [ 1475.674338] ? fsnotify_destroy_marks+0x22/0x110 [ 1475.674341] blkdev_ioctl+0x967/0x9f0 [ 1475.674344] ? dentry_kill+0x4d/0x1a0 [ 1475.674346] block_ioctl+0x39/0x40 [ 1475.674348] do_vfs_ioctl+0xa1/0x620 [ 1475.674351] ksys_ioctl+0x66/0x70 [ 1475.674352] __x64_sys_ioctl+0x16/0x20 [ 1475.674354] do_syscall_64+0x55/0x100 [ 1475.674355] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1475.674357] RIP: 0033:0x7f23a49baf47 [ 1475.674359] Code: Bad RIP value. [ 1475.674360] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1475.674360] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1475.674361] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1475.674361] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1475.674362] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1475.674362] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1598.552621] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1598.553064] Not tainted 4.20.0-rc7 #1 [ 1598.564058] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1598.586747] mdadm D 0 771 1 0x00000004 [ 1598.586749] Call Trace: [ 1598.586753] ? __schedule+0x404/0x8f0 [ 1598.586754] schedule+0x39/0x90 [ 1598.586758] r5l_start+0x1282/0x1340 [raid456] [ 1598.586761] ? wait_woken+0x80/0x80 [ 1598.586762] md_start+0x3b/0x60 [ 1598.586764] do_md_run+0x4b/0xb0 [ 1598.586766] md_ioctl+0x19da/0x1e80 [ 1598.586768] ? current_time+0x4d/0x90 [ 1598.586770] ? shmem_truncate_range+0x1e/0x40 [ 1598.586772] ? fsnotify_grab_connector+0x3c/0x60 [ 1598.586772] ? fsnotify_destroy_marks+0x22/0x110 [ 1598.586774] blkdev_ioctl+0x967/0x9f0 [ 1598.586775] ? dentry_kill+0x4d/0x1a0 [ 1598.586776] block_ioctl+0x39/0x40 [ 1598.586778] do_vfs_ioctl+0xa1/0x620 [ 1598.586780] ksys_ioctl+0x66/0x70 [ 1598.586781] __x64_sys_ioctl+0x16/0x20 [ 1598.586783] do_syscall_64+0x55/0x100 [ 1598.586784] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1598.586785] RIP: 0033:0x7f23a49baf47 [ 1598.586787] Code: Bad RIP value. [ 1598.586788] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1598.586789] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1598.586789] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1598.586789] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1598.586790] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1598.586790] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1721.432173] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1721.443790] Not tainted 4.20.0-rc7 #1 [ 1721.455184] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1721.478346] mdadm D 0 771 1 0x00000004 [ 1721.478348] Call Trace: [ 1721.478353] ? __schedule+0x404/0x8f0 [ 1721.478354] schedule+0x39/0x90 [ 1721.478359] r5l_start+0x1282/0x1340 [raid456] [ 1721.478361] ? wait_woken+0x80/0x80 [ 1721.478364] md_start+0x3b/0x60 [ 1721.478365] do_md_run+0x4b/0xb0 [ 1721.478366] md_ioctl+0x19da/0x1e80 [ 1721.478368] ? current_time+0x4d/0x90 [ 1721.478371] ? shmem_truncate_range+0x1e/0x40 [ 1721.478373] ? fsnotify_grab_connector+0x3c/0x60 [ 1721.478374] ? fsnotify_destroy_marks+0x22/0x110 [ 1721.478376] blkdev_ioctl+0x967/0x9f0 [ 1721.478377] ? dentry_kill+0x4d/0x1a0 [ 1721.478378] block_ioctl+0x39/0x40 [ 1721.478380] do_vfs_ioctl+0xa1/0x620 [ 1721.478382] ksys_ioctl+0x66/0x70 [ 1721.478383] __x64_sys_ioctl+0x16/0x20 [ 1721.478385] do_syscall_64+0x55/0x100 [ 1721.478386] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1721.478387] RIP: 0033:0x7f23a49baf47 [ 1721.478389] Code: Bad RIP value. [ 1721.478390] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1721.478391] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1721.478391] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1721.478392] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1721.478392] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1721.478392] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1844.311693] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1844.323404] Not tainted 4.20.0-rc7 #1 [ 1844.334923] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1844.358138] mdadm D 0 771 1 0x00000004 [ 1844.358139] Call Trace: [ 1844.358144] ? __schedule+0x404/0x8f0 [ 1844.358145] schedule+0x39/0x90 [ 1844.358149] r5l_start+0x1282/0x1340 [raid456] [ 1844.358152] ? wait_woken+0x80/0x80 [ 1844.358154] md_start+0x3b/0x60 [ 1844.358155] do_md_run+0x4b/0xb0 [ 1844.358157] md_ioctl+0x19da/0x1e80 [ 1844.358158] ? current_time+0x4d/0x90 [ 1844.358160] ? shmem_truncate_range+0x1e/0x40 [ 1844.358161] ? fsnotify_grab_connector+0x3c/0x60 [ 1844.358162] ? fsnotify_destroy_marks+0x22/0x110 [ 1844.358164] blkdev_ioctl+0x967/0x9f0 [ 1844.358165] ? dentry_kill+0x4d/0x1a0 [ 1844.358166] block_ioctl+0x39/0x40 [ 1844.358168] do_vfs_ioctl+0xa1/0x620 [ 1844.358170] ksys_ioctl+0x66/0x70 [ 1844.358171] __x64_sys_ioctl+0x16/0x20 [ 1844.358173] do_syscall_64+0x55/0x100 [ 1844.358175] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1844.358176] RIP: 0033:0x7f23a49baf47 [ 1844.358178] Code: Bad RIP value. [ 1844.358179] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1844.358180] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1844.358180] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1844.358181] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1844.358181] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1844.358181] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004 [ 1967.191195] INFO: task mdadm:771 blocked for more than 120 seconds. [ 1967.202927] Not tainted 4.20.0-rc7 #1 [ 1967.214478] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1967.237754] mdadm D 0 771 1 0x00000004 [ 1967.237756] Call Trace: [ 1967.237760] ? __schedule+0x404/0x8f0 [ 1967.237761] schedule+0x39/0x90 [ 1967.237765] r5l_start+0x1282/0x1340 [raid456] [ 1967.237768] ? wait_woken+0x80/0x80 [ 1967.237770] md_start+0x3b/0x60 [ 1967.237772] do_md_run+0x4b/0xb0 [ 1967.237773] md_ioctl+0x19da/0x1e80 [ 1967.237775] ? current_time+0x4d/0x90 [ 1967.237777] ? shmem_truncate_range+0x1e/0x40 [ 1967.237779] ? fsnotify_grab_connector+0x3c/0x60 [ 1967.237779] ? fsnotify_destroy_marks+0x22/0x110 [ 1967.237781] blkdev_ioctl+0x967/0x9f0 [ 1967.237782] ? dentry_kill+0x4d/0x1a0 [ 1967.237783] block_ioctl+0x39/0x40 [ 1967.237785] do_vfs_ioctl+0xa1/0x620 [ 1967.237787] ksys_ioctl+0x66/0x70 [ 1967.237788] __x64_sys_ioctl+0x16/0x20 [ 1967.237790] do_syscall_64+0x55/0x100 [ 1967.237792] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1967.237793] RIP: 0033:0x7f23a49baf47 [ 1967.237795] Code: Bad RIP value. [ 1967.237796] RSP: 002b:00007ffd29c98ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 1967.237797] RAX: ffffffffffffffda RBX: 00007ffd29c9ac76 RCX: 00007f23a49baf47 [ 1967.237797] RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000004 [ 1967.237798] RBP: 00000000017d1670 R08: 0000000000000000 R09: 0000000000000000 [ 1967.237798] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000017d5370 [ 1967.237799] R13: 00000000017d1640 R14: 00007ffd29c99b50 R15: 0000000000000004
I tried also manul assemble after igonorig md0 array in mdadm.conf: mdadm --assemble /dev/md0 -Rf /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 /dev/md1 Result was the same. ##### mdadm --examine /dev/sd[cdef]1 /dev/md1 /dev/sdc1: Magic : a92b4efc Version : 1.2 Feature Map : 0x200 Array UUID : 9094396e:3e5b1d19:54861ff8:7fd9f9f6 Name : ub-nas:0 (local to host ub-nas) Creation Time : Wed Nov 21 16:03:49 2018 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 3907006464 (1863.01 GiB 2000.39 GB) Array Size : 5860509696 (5589.02 GiB 6001.16 GB) Data Offset : 18432 sectors Super Offset : 8 sectors Unused Space : before=18152 sectors, after=0 sectors State : clean Device UUID : 9379b48b:d7b567da:99536bf7:e9ef283e Update Time : Wed Dec 19 10:26:30 2018 Bad Block Log : 512 entries available at offset 264 sectors Checksum : e38e23e3 - correct Events : 3522 Layout : left-symmetric Chunk Size : 64K Device Role : Active device 0 Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing) /dev/sdd1: Magic : a92b4efc Version : 1.2 Feature Map : 0x200 Array UUID : 9094396e:3e5b1d19:54861ff8:7fd9f9f6 Name : ub-nas:0 (local to host ub-nas) Creation Time : Wed Nov 21 16:03:49 2018 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 3907006464 (1863.01 GiB 2000.39 GB) Array Size : 5860509696 (5589.02 GiB 6001.16 GB) Data Offset : 18432 sectors Super Offset : 8 sectors Unused Space : before=18152 sectors, after=0 sectors State : clean Device UUID : ed4668e3:d38826c1:22bdb927:2bca59ea Update Time : Wed Dec 19 10:26:30 2018 Bad Block Log : 512 entries available at offset 264 sectors Checksum : fe800805 - correct Events : 3522 Layout : left-symmetric Chunk Size : 64K Device Role : Active device 1 Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing) /dev/sde1: Magic : a92b4efc Version : 1.2 Feature Map : 0x200 Array UUID : 9094396e:3e5b1d19:54861ff8:7fd9f9f6 Name : ub-nas:0 (local to host ub-nas) Creation Time : Wed Nov 21 16:03:49 2018 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 3907006464 (1863.01 GiB 2000.39 GB) Array Size : 5860509696 (5589.02 GiB 6001.16 GB) Data Offset : 18432 sectors Super Offset : 8 sectors Unused Space : before=18152 sectors, after=0 sectors State : clean Device UUID : c8f2c9f5:abe7bdee:729edcfb:f6c348e8 Update Time : Wed Dec 19 10:26:30 2018 Bad Block Log : 512 entries available at offset 264 sectors Checksum : 108aedd8 - correct Events : 3522 Layout : left-symmetric Chunk Size : 64K Device Role : Active device 2 Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing) /dev/sdf1: Magic : a92b4efc Version : 1.2 Feature Map : 0x200 Array UUID : 9094396e:3e5b1d19:54861ff8:7fd9f9f6 Name : ub-nas:0 (local to host ub-nas) Creation Time : Wed Nov 21 16:03:49 2018 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 3907006464 (1863.01 GiB 2000.39 GB) Array Size : 5860509696 (5589.02 GiB 6001.16 GB) Data Offset : 18432 sectors Super Offset : 8 sectors Unused Space : before=18152 sectors, after=0 sectors State : clean Device UUID : f5f10a7a:03c57c0c:2ed04407:46346fd0 Update Time : Wed Dec 19 10:26:30 2018 Bad Block Log : 512 entries available at offset 264 sectors Checksum : a6196c65 - correct Events : 3522 Layout : left-symmetric Chunk Size : 64K Device Role : Active device 3 Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing) /dev/md1: Magic : a92b4efc Version : 1.2 Feature Map : 0x200 Array UUID : 9094396e:3e5b1d19:54861ff8:7fd9f9f6 Name : ub-nas:0 (local to host ub-nas) Creation Time : Wed Nov 21 16:03:49 2018 Raid Level : raid5 Raid Devices : 4 Avail Dev Size : 20934656 (9.98 GiB 10.72 GB) Array Size : 5860509696 (5589.02 GiB 6001.16 GB) Used Dev Size : 3907006464 (1863.01 GiB 2000.39 GB) Data Offset : 18432 sectors Super Offset : 8 sectors Unused Space : before=18152 sectors, after=0 sectors State : clean Device UUID : c3f48936:91d2e7fb:27b6c078:c7f771c2 Update Time : Wed Dec 19 10:26:30 2018 Bad Block Log : 512 entries available at offset 264 sectors Checksum : cea65d7d - correct Events : 3522 Layout : left-symmetric Chunk Size : 64K Device Role : Journal Array State : AAAA ('A' == active, '.' == missing, 'R' == replacing)